Apparatus for stripping carding-engines.



J. W. COOK, T. E. LEIGH, J. JOWETT & N. COOK.

APPARATUS FOR STRIPPING CARDING ENGINES.

APPLICATION FILED JULY 2.1918.

Patented Apr. 29, 1919.

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WTTED STA-Tide PATENT JOHN WILLIAM COOK, THOMAS ERNEST LEIGH, JOHN J'OWETT, AND NORMAN COOK, OF

. MANCHESTER, ENGLAND.

APPARATUS FOR. STRIPPING CABDING-ENGINES.

Specification of Letters Patent.

Patented Apr. 29, 1%]19.

Application filed July 2, 1918. Serial No. 243,059.

To all whom it may concern:

Be it known that we, JOHN WILLIAM CooK, THOMAS ERNEST LEIGH, JOHN Jow- ETT, and NORMAN Coon, all of 18 Exchange street, Manchester, in the county of Lancaster, England, have invented certain new and useful Improvements in Apparatus for Stripping Carding-Engines, of which the following is a specification.

This invention relates to apparatus for stripping the cylinders and doffers of card ing engines by suction; and it relates more particularly to apparatus of the above stated kind in which a suction nozzle is mounted upon a carriage which slides upon a tube containing a screw for traversing the said carriage along the tube which is provided with a longitudinal slot through which a die nut or screw engaging member on the carriage is projected to engage with the traversing screw. In apparatus of the type described the die nut or screw engaging member has been pivoted upon the carriage and its pivot has been provided with a prolongation adapted when the carriage reaches a predetermined point, to come into contact with a fixed member on the carding engine whereby the said prolongation was actuated and the die nut rocked and released from engagement with the traversing screw, the nozzle and carriage remaining stationary at the end of the screw until brought back to the initial position.

The construction described above is, however, open to the objection that in order to keep the nozzle out of the path of the grinding roller when the wire of the carding engine is being ground it has been necessary to reduce detrimentally the size of the front cover of the doffer in order to leave suiilcient width of the doffer wire exposed to permit the grinding roller and the suction nozzle to have separate parallel paths across the dofi'er. Further when the die-nut is in engagement with the screw, there is a strong pull tending to force the screw engaging member too deeply into gear and cause severe frictional pressure between the end of the screw engaging member and the screw thread, consequently there is a marked defiection of the screw.

, The objects of the present invention are, therefore, to overcome the drawbacks men tioned above by providing an improved form of traversing mechanism whereby the carriage, and with it the nozzle, may be rocked around the slotted tube to bring the suction nozzle on to the side of the said tube that is remote from the position normally occupied by the said nozzle and there fore quite clear of the path traversed by the grinding roller; and a further object is to prevent excessive pressure between the die-nut and the thread of the traverse screw.

With these objects in view the screw engaging member on the carriage is adapted to be moved completely out of engagement with the screw thread and also clear of the slotted tube, means being provided for limiting the inward movement of the screw engaging member, I such means consisting, for example, of a tail piece adapted to come into contact with the carriage when the said member is in its correct working position.

In order that our invention may be fully understood a sheet of drawings is appended hereto, in which Figure 1 is a front elevation of a pre ferred form of the apparatus.

Fig. 2 is an end view with the tube and screw sectioned through the line A-B, Fig. 1.

Figs. 3 and 4 are fragmentary views showing portions of the carriage and slotted tube in section, and the screw-engaging member and a portion of the screw in ele- .vation.

1 is the tube fixed in the end bearings Z, and incasing the screw 2 which is rotated by the pulley P. The tube is provided in its upper surface with a longitudinal slot 3 through which the die-nut or screw engaging member 4- passes to engage with the thread of the screw 2. The said member 4: is fixed on a pivot 5 free to rock in lugs 6 cast on the carriage 7. The pivot 5 is bent down as shown at 5, the purpose of which will presently be explained. The screw engaging member 4 is formed with a tail piece 4 which is so made that when the said member is sui'ficiently engaged with the screw, it rests upon the rim of the carriage 7 as best shown by Fig. 3, and cannot be dragged too deeply into engagement with the thread of the screw thus obviating any tendency to distortion when the revolution of the screw moves the carriage along in the direction of the screw. A collar 8 is fixed at the end of the tube near the bearing Z and carries an adjustable pin 9 which, when the carriage reaches a predetermined point, comes in contact with the tail 5 of the pivot 5 and swings the screw engaging member at out of gear with the screw to the dotted position shown in Fig. 1. By further swinging the screw engaging member it may be withdrawn completely from the longitudinal slot 3 in the tube 2 and the carriage with the nozzle 10, clipped to it by the clamp O, turned around on the tube as shown by Fig. 4, so that the nozzle 10 assumes the dotted position shown in Fig. 2 quite out of the path of the grinding roller so that no reduction in the extent of the cover V is necessary in applying th apparatus to existing cards.

The inner face of the carriage 7 is provided with interrupted bearing surfaces 7 sliding on the tube that act as distance pieces and leave spaces 7 around the tube from which flufi' and the like may be easily removed.

Claims:

1. An apparatus for stripping carding engines of the type described, comprising a fixed supporting tube having a longitudinal slot, a screw rotatable in said tube, a carriage movable on said tube, and a screw-engaging member movably connected with the carriage, and projecting therefrom through the slot, and adapted to be withdrawn from the screw and slot.

2. An apparatus for stripping carding engines of the type described, comprising a fixed supporting tube having a longitudinal slot, a screw rotatable in said tube, a carriage movable on said tube, and a screw-engaging member movably connected with the carriage, and projecting therefrom through the slot, and adapted to be withdrawn from the screw and slot, means being provided for limiting the movement of the said member toward the screw.

3. An apparatus for stripping carding engines of the type described, comprising a fixed supporting tube having a longitudinal slot, a screw rotatable in said tube, a carriage movable and adapted to turn on said tube, and a screw-engaging member movably connected with the carriage, projecting therefrom through the slot and withdrawable from the slot to permit the carriage to turn on the tube.

4. An apparatus for stripping carding engines of the type described, comprising a fixed supporting tube having a longitudinal slot, a screw rotatable in said tube, a carriage movable on said tube, and a screw-engaging member pivoted to the carriage, projecting therefrom through the slot, and adapted to swing relatively to the carriage into and out of engagement with the screw.

5. An apparatus for stripping carding engines of the type described, comprising a fixed supporting tube having a longitudinal slot, a screw rotatable in said tube, a carriage movable on said tube, and a screw-engaging member pivoted to the carriage, projecting there-from through the slot, and adapted to swing relatively to the carriage into and out of engagement with the screw, said member being provided with a tailpiece adapted to bear on a portion of the carriage and limit the movement of the member toward the screw.

In testimony whereof we have aflixed our signatures in the presence to two witnesses.

JOHN WILLIAM COOK. THOMAS ERNEST LEIGH. JOHN J OW'ETT. NORMAN COOK. Witnesses:

ELDnN ALFRED KING, HARRY HALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatent's, Washington, D. G. 

